Alarm-clock.



E. B. LAPHAM 6L J. WALKER.

ALARM GLOGK.

APPLIGATION FILED FEB. 25, 1909.

9 1 ,892. Patented Apr. 27, 1909.

2 SHEETS-SHEET 1.

E.' B. LAPHAM & J. WALKER.

ALARM CLOCK.

APPLIOATION FILED FEB. 25, 1909.

Patented Apr. 27, 1909.

Z SHEETS-SHEET 2.

THE mmm.: PETERS co., wnmuafow, n. c4

'vv verwirren. nvt fr www@ Claritin EDWIN B. LAPHAM ANI) JAMES WALKER, OF NEW YORK, N. Y., SSIGNORS TO SETE THOMAS CONNECTICUT, A CORPORATION OF CONNECTICUT.

CLOCK COMPANY, OF THOMASTON,

ALARM-CLOCK.

No. erases.

Application led February 25, 1909.

Specoaton of 'Letters Patent.

Patented April 2'7, 1909.

Sal NO. 480,047.

To all whom i may concern:

it linorvn that We, En in LAPHAM and Jarras Nami citizens of the United States, residing New "forli city, New Yori/i, have invented certain nenr and useful linprovements in Afilarin--Cloclis, of Wl 'ch the following is a clear, fnll, and exact description.

Cnr invention relates to an improvement in alarm clocks of the sar e general character as that described and claimed in a previous patent of ours dated ,-ngnst 25, 1908, Numbei 396,734.

The object of the present improvement is to provide an alarm mechanism operated once in Pfl hours With shutting o; ism .vhich will not permanently lo( the alarm stopping device in its shut-of? position but which will enable the operator to shut oil the alarm at each particulz'r-r occasion required and yet permit the alarm to again operate hours later Without any further attention. The alarm mechanism of a clocl of this elaracter must necessarily he of the continuons type, that is, a mechanism which will cause the alarm to ring i' om 30 to minutes at a time unless saut Our invention will be defined in the cla" In the drawings which disclose the preferred embodiment of our invenr'gion7 lf'ignre represents front view of the entire alarml -cloelz showing the alarm setting dial, 2 is a front elevation ol' the entire cl l novement and alarm mechanism; Fig. a fragmentary se( ion along line of lfig. 2 looking in the direction of the arrow a; il ig. is a fragmentary tion alone i/ ey of Fig. 2 looking in the di SQL showing the connection of tripping mechanism to the clock train 1Q' F; is an l While 2 indicates the train of gearing therefrom to the hour and minute hands 28 and 29.

3 is the main spring of the alarm mechanism and said mechanism comprises train of gearing il and a double ended vibrating paivl of the usual hind which is oscillated by its engagement with a fast ruiming toothed Wheel of the alarm train. This parvl is mounted on a rocking shaft which also carries the bell hammer 7 for striking the alarm bell 8 (see Figs. 2, 3 and si).

rEhe preferred construction here illustrated is the common alarm mechanism found in nearly all modern day alarin clocks, and We have preferably shown our improvement in combination With such a mechanism, although it will be apparent that our inrprovement is equally Well adapted to other forms of alarm mechanisms.

fas shown in Figs. 3 and el, the bell hainnrer rocking shaft 6 carries fast thereto an arm 9, and normally extending into the path of movement of this aria is a stopping device il). The stopping device may be of any i'lat spring member attached to the supporting frame i2 at ll (see llig. 2). fis shown in ifigs. and e, the outer end of this spring nieniber l() may be turned inwarfrlly to cofre into the path of the ann it and the hammer 7 from vibrating.

Our preferred means for supporting the tripping means consists of' an adjustable setting shaft i3 which is suppor ed in. bea-rings on the main trarne l2 and passes through the spring member l0, as shown in Figs. Ll, 5 and This shaft i3 is norn'ially stationary7 and may have fixed to its rear end at the back of the clock a hnrirled finger piece 3l for adusting the same. Preferably at the front end of this shaft 13 is fixedly secured a let-off earn l/l having a notch 1S therein and an indicating pointer l5 adjacent thereto for indicating its adjustment. A Eil-hour dial 30 on the outer face of the clock enables the operator to set the hand l5 and let-off cam ll at the desired hour for releasing the alarm. Referring to Fig. 6 it Will be seen that behind this let-off cam le and mounted to turn loosely on shaft i3 is a movable portion or pinion l 5 which meshes With and is operated from the clock train 2. This stationary letoff cam .le and the movable member l5 con- 9 and tl'iereby hold stitute the preferred form oi our tripping l means for the stopping :device since they cooperate in releasing said stopping device from the alarm and thereby allow said alarm tooperate. K y

rlhe spring member or stopping device 10 tends to carry the bent end portion out of engagement with arm 9, but the pinion 15 which rests against this spring member, vnormally holds it in its stopping position as shown in Fig. 4. A pin 16 is carried on the pinion 15 and as the same is rotated by the clock movement, this pin 16 travels laround the tace of the foam until it reaches notch 18. lt will be observed from Fig. 2 that pinion 15 has twice the number 'oi teeth as the hour hand wheel with which it meshes, and therefore rotates only once in 24 hours. As the pin 16 drops into notch 18 of the-'cam 414, the spring member 10 is permitted to move out of engagement with arm 9, as shown in Fig. 5, and thereby allow the alarm mechanism to operate. rlhe pinion 15 may slide long-itud-ina'lly on shaft 13 as well as rotate t rereon. Preferably below the shaft 13 and attached to the main frame 12 is a bearing stud 19, and supported on this stud are tie devices for shut ting oil the-alarm by hand after it has been automatically released by the cloelt movement. An engaging member 20 is loosely mounted on this bearing stud 19, 'and said engaging member il desired may consist of a lever having a handle portion 21 and a portion 22 for engaging the lower end ci the stopping device 10. As the lower end or handle 21 of this lever 2O is vmoved to the right viewing 2, the portion 22 will ride over upper face of the stopping device i0 and by a cam-lile action will torce 'the same rearwardly into the path of arm 9 as shown in Fig. 2. Also on this bearing stud 19 and in iront of lever 20 we have preferably mounted a rotatable pinion 23 in mesh with pinion 15 and operated 'tl'iereby from the clock movement. Fast to this pinion and adjacent 'to lever 20 is preferably fixed a toothed ratchet wheel 24, and 4cooperating therewith Afor locking engagement is 'a a'wl 25 carried on lever 20 (see Fig. 2). A ight spring 26 may be provided as shown to a'ct Aon an -arm of said pawl 25 to keep its nose pressed against ratchet 24.

Vile prefer to connect a coil spring 27 to the main frame and also to lever 2O to move said lever toward the left, looking at Fig. '2. It will be observed from 'this same figure that the teeth of ratchet 24 are so inclined and the pawl 25 is so mounted that when lever 2U is moved by the operator to the right the nose of the pawl runs idly 'over the'teeth of ratchet 24 but immediately locks in engagement 'therewith when released to the force of spring 27. As soon as the lever '2O is released an'd locked by means oi pawl 25 to ratchet 24, its return movement to the left is delayed or controlled by the movement oi the ratchet 24 which, as before stated, is operated from the clock movement. A pin 3l isI prel`- erably lined to the main trame i2 in the path of an extension 32 of said pawl 25 to release said pawl and lever 25 from the ratchet 24 when the lever 20 has moved a surlicient distance to the left.

Briefly the operation ci' our improveficnt is as follows. ln order to set the alar i releasing mechanism l'or operation at any predetermined time in the 24 hours, the hand 15 and adjacent notch 18 o'll the let-oli earn is turned to the desired hour on dial 3U bv means oi' iin'ger piece 31. lrhe pinion 15 will be operated by the cleca move carry pin 16 around the tace oi caA shown in 4, until it drors into the notch 18 as shown in Fig. 5. he alarm is then re leased as above described, and would 'ordinarily continue ringing until inrther rotation 'of pinion 15 carried the pin 16 away iro `A notch 18 il it were not `l'or the hand-operated stopping means which we have provided. l?? hen the operator vv'sfies to stop the alarm he throws the lever '2G toward the right to cause the portion oi said lever to act on the stopping member 19 and `l'orce it into the path ol arm 9 as shown in Fig. 4. l. hen the lever 20 is released in its right-hand position, the spring 27 would immediately return it to its lett-hand position and ont oi' engagement with the stopping member 1G ii it were not i'orjthe locliing engagement oi' the par.- with ratchet "lihe lever' 2O therei'ore oeing loclied with ratchet returns to its leithand position slowly, being controlled by the -cloci "iovement 'v 'fhis sionv return nievernent oi' the lever 2O enables the Can 14 to -carry its notch 1S away l'rongi pin 16 `and hold down the stopping device 10 bel'ore the portion 22 oi the lever is out oi engagement therewith. rihe lever 29 moves to the leit in engagement with ratchet until the eXtension 32 olI pawl 25 contacts with pin 31 and releases the pawl from the ratchet. lt will be Aobserved that al'ter the lever '29 is in its left-hand position the stopping device is again in readiness to be released by the next actuation ol' the tripping means. l" thereiore, provides a construction by wl i the stopping device may be locked by hand in its shut-oli position and then ant niatically unlocked by the continued rotati-on ol' the 'clock movement.

l'il've claim:

1. ln combination a clock movement, an alarm mechanism, a stopping device 'l'or non mally preventing the operation oi' said alarm, tripping means actuated by said clock movement adapted to release said stopping device `and allow said alarm to operate until said stopping device is returned to its normal position, an engaging member moved by hand to replace and hold said stopping device in its normal position, and means controlled by the clock movement for automatically disengaging said hand moved member from the stopping device before the neXt actuation of the tripping means.

2. ln combination a clock movement, an alarm mechanism, a stopping device 'for normally preventing the operation oll said alarm, tripping means adapted to hold said stopping device in norm al position and operated by said clock movement to periodically release the same and allow said alarm to operate until said stopping device is returned to normal position, an engaging member moved by hand to replace and hold said stopping device in its normal position and means controlled by the clock movement for auto natically disengaging said hand moved member l'rom the stopping device as soon as the tripping means is operated by the clock movement to again hold said stopping device in normal position.

3. ln combination a clocli movement, an alarm mechanism, a stopping device for normally preventing the operation of said alarm, tripping means actuated by said clock movement once in 24 hours adapted to release said stopping device and allow said alarm to operate until said stopping device is returned to its normal position, an engaging member moved by hand to replace and hold said stopping device in its normal position, and means controlled by the clocl movement for automatically disengagin g said hand moved member Afrom the stopping device before the next actuation oi' the tripping means, and means lor adjusting said tripping means to release said stopping means at any predetermined 4. in combination a clock movement, an alarm mechanism, a stopping device for normally preventing the operation of said alarm, tripping means adapted to hold said stopping device in normal position and operated by said clock movement to periodically release tbe same and allow said alarm to operate until said stopping device is returned to normal position, an engaging member moved by hand to replace and hold said stopping device in its normal position and means controlled by the clock movement for automatically disengaging said hand moved member from the stopping device as soon as the tripping means is operated by the clock movement to again hold said stopping device in normal position, and means for adjusting said tripping means to release said stopping means at any predetermined time.

5. ln combination a clock movement, an alarm mechanism, a stopping device for normally preventing the operation of said alarm,

tripping means actuated by said clock movement adapted to release said stopping device and allow said alarm to operate until said stopping device is returned to normal position, an engaging member moved by hand to replace and hold said stopping device in its normal position, and means to automatically connect said hand moved member to said clock movement to be moved therewith until said member is disengaged from said stopping device.

6. ln combination a clock movement, an alarm mechanism, a stopping device for normally preventing the operation oi said alarm, tripping means actuated by said clock movement once in 2d hours adapted to release said stopping device and allow said alarm to operate until said stopping device is returned to normal position, an engaging niember moved by hand to replace and hold said stopping device in its normal position, and means to automatically connect said hand moved member to said clock movement to be moved therewith until said member is disengaged from said stopping device, and means for adjusting said stripping means to release said stopping means at any predetermined time.

7. In combination a clock movement, an alarm mechanism, a stopping device for normally preventing the operation ot' said alarm, tripping means for said stopping device comprising a stationary and adjustable et-oll" cam and a movable portion resting against said stopping device to hold the same in normal position, said portion being operated by said cloc r movement once in 2e hours to coact with said lot-oril cam and release said stopping device, thereby allowing said alarm to operate until said stopping device is returned to normal position, an engaging member moved by hand to replace and hold said stopping device in its normal position and means controlled by the clock movement for automatically disengaging said hand-operated niember from said stopping device as soon as the movable portion of said tripping means is operated by the clock movement to again hold said stopping device in normal position, and means for adjusting said let-oill cani to cooperate with said movable portion in releasing said stopping device at any predetermined time in. the 24 hours.

Signed at New York, N. Y., this 23rd day of February, 1909.

EDY/'VIN B. LAPHLM. JAMES WALKER.

Witnesses EMERSON lt. NEWELL, BEATRICE Minvrs. 

